elementary school in newtown, connecticut. today, we'll remember the victims. we'll also go in depth on where the investigation stands, and talk with dr. sanjay gupta and drew pinsky, about what medical science has learned about the mind of a killer. we'll also look ahead of where do we go from here? especially when it comes to the right to bear arms in the united states, and what president obama called the nation's epidemic of gun violence. we want to welcome our viewers in the united states and around the world. i'm wolf blitzer. we begin our special edition of "the situation room" by focusing in on the search for answers. why? why would a 20-year-old man kill his mother, then gun down 20 children and six adults at the sandy hook elementary school before taking his own life? why? police are not the only ones pouring over the evidence, exploring answers. medical investigators are all over this case as well. let's go to our chief medical correspondent dr. sanjay gupta. he is joining us now. now, sanjay, you have been taking a very close look, potentially at the mind of a killer. >> yeah, and

lot of heartache and people walking around this small town now in connecticut, newtown, connecticut, it's so hard for them to believe and to understand what happened here. back to you. >> they haven't said officially that the shooter wound up killing himself, have they? >> reporter: they have not. they have not revealed that. they have not officially released the shooter's name either. we also understand, remember, there is another adult at another location who was also found dead and we believe that that has some connection to the shooter in this case, and yet someone else was also being questioned. so this investigation is far from over. there is a warrant being served at the place where the suspect lived with someone else, who was also involved in the shooting. and so a lot of questions, of course, as we all have at this time to find out how this happened and, wolf, why this happened. >> many questions that law enforcement will be investigating. susan, stand by. joining us on the phone right now is lieutenant paul vance, a spokesman for the connecticut state police. he's in newto

control. >> summon even one tiny iota of the courage that the teachers, the principal in newtown showed on friday. >>> finally, some real answers about the benghazi attack that killed four americans. we now know more than reason for the grossly inadequate security. i'm wolf blitzer. you're in "the situation room." we begin with president obama's call to action against what he calls the national epidemic of gun violence amid the trauma over the newtown school massacre, he has put vice president biden in charge of the agenda that could be submitted to congress next month. and a growing number of americans want action from the government. a brand new poll shows that 52% of u.s. adult dults favor major restrictions on guns, making all guns illegal versus 47% last august. let's turn to our white house correspondent brianna keilar. she's joining us. the president came out and didn't mince very words. >> reporter: no, wolf. this is the first time that president obama has laid out a time line. he appointed vice president biden to lead this group of cabinet lawmakers to come out with some

newtown school massacre, the cycle of funerals and grief sends endless. three more children and three teachers were laid to rest today, including the principal, dawn hochsprung. and one more burial we're learning more about, adam lanza's first victim. deborah fay rec deborah feyerick is monitoring that. >> reporter: nancy lanza was lay i had to rest today. the chief of police, a close friend of the family, grew up with nancy and her brother who was on the police force, the chief is telling us that in fact there was a private service for family only. they didn't even invite friends. it was a very small service at an undisclosed location. she was buried. in fact, adam was not buried with her. that's still in discussion. if that happens, if he joins his mother at some point, it's not going to be for many months. but the mother, as you say, his first victim, she was buried today. this is the home where she died. shot four times in the head by her son. this, wolf, came after she had been away for three days. when she returned home thursday, the first victim friday morning was nancy l